This is a discussion on Supernatural TV Show MBTI within the Guess the type forums, part of the What's my personality type? category; I know a thread has been done on this but ah fuck it, I want to re-open it so here's ...

Dean: ENFJ
Sam: INFJ
They both seem like intuitives and idealistic to me. I think Dean is an extravert, because, when he's upset or something, he goes out around people to cool down. On top of that, he's the one who went and got Sam go on hunts with him. Those just seems like the traits of an extravert to me.

Dean - ESFJ - just reading the description of ESFJ made me think of Dean long before I happened upon this thread. Protecting/guarding is his THING. He tries to repress those feelings, but they just come right on out.
Sam - INFJ